Dumping truck train



March 4, 1.930.. R H, CRISLER DUMPING TRUCK vTRAIN Filed June 13. 1927 Sheets-Sheet 1 March 4, 1930. A R, H, CRlsvLER f v 1,749,274

DUMPING TRUCK TRAIN Filed June 13. 1927 2 Sheets-Shea*I 2 Patented Mar. 4, 1.930

PATENT' OFFICE l BAY H. CBISLEBI, I GLEN'DALE, CALIFORNIA.

I D'UMI'ING TRUCK TRAIN Application ed June 13, 1927. Serial No. 198,498.

This invention relates to dumping truck trains, in other words to a construction em` bodying a motorized dumping .truck and one, v

or more, dumping trailers attached to said g truck and operated'by the motor to discharge their loads.

An object of the invention is to rreduce the cost of hauling materials of the character that can be dumped by' elevating one end of 10 the trailer body.

At present, sand, mortar and other loose materials of this character are transported in motorized trucks provided with dum ing mechanism which operates on the truck ody 'i 15. to tilt the same to discharge the contents therefrom. Dumpin trailers have not heretofore been employe in connection with the v motorized truckjgr hauling loose materials. This invention makes it possible to employ .m a train of vehicles provided with tiltin bodies and makes possible the tilting of sai bodies, either independently of one another or simultaneously.

Another object of. the invention is simplicity of construction and operation.A

The invention may be variously embodied and the accompanying ,drawings illustrate several different forms thereof:

Fig. 1 is a side elevation ofl a dumping truck train constructed in accordancev with the provisions of this invention.

Fig. 2 is an enlarged plan view, partly in section, ofthe operating connections between the pump on the trailer and the transmission of the motor truck. l Y Fig. 3 is an enlarged sectional detail on the line indicated by 3-3, Fig. 2.

Fig. 4 is a broken plan view of the trailer tongue.

Fig'. 5'is a sectional elevation of one of the pumps, and the cylinder connected there- P with, the view also showing' the associated plunger. Y

Fig; 6 is 'a plan view, partly in section, showing a modified form` of driving connection between the 'trailer pump and the transmission of the motor truck.

Fig. 7 is a plan lview. partly inA section, of a third modification of the driving connections between the trailer pump and the transmission of the motor truck.

The form of the invention illustrated in Figs. 1 to 5 inclusive will first be described as follows: 4

A dumping truck train embodying the invention is illustrated in its entirety in Fig. 1 of the drawings and said train, in this instance, comprises a motorized dumping truck, indicated in general by the character 11, and 60 a dumping trailer, indicated in general by the character 12.

The truck 11 comprises a chassis 13 and a bodyv 14, tiltably mounted onv the chassis. The fulcrum for the body 14 is indicated at 65 4On the chassis`13 is mounted a motor 16 which is connected by suitable driving mechanism to certain of the chassis wheels, in a manner well understood in this art, to effect of the truck. This driving mecha'- msm includes a transmission, indicated in general by the character 17, and the motor shaft being indicated at 18. As is customary, in dum trucks, 4in mesh with one of the ears 75 19 of the transmission is a gear 20, sli ably vmopnted by a spline 21 on a shaft 22. The

shaft 22 turns in bearings 23, 24 of the transmission case and drives a pump 25. The pump 25 constitutes a portion of a body hoist- 80 mg mechanism, which is indicated in. general by the-character 26, and which also includes a cylinder 27. This hoisting mechanlsm l1s constructed in a manner well understood m thel art relating to dum ing trucks and, ac-A cordingly, need not be rther described at this time. To those skilled in this art it is readily understood that when the gear 20 is thrown into mesh with the gear 19, by operation of the gear shifting mechanism 28, the

ump'25 will be o rated to pump a liquid into the cylinder 2 beneath the plunger in said cylinder, so as to raise said plunger and tilt the body 14, thus dumping the' contents therefrom. 95 In'mesh with one ofthe gears 201 of the transmission 17 is another gear 29 on a shaft `30 which turns in bearings 31, 32 of the transmission case. The gear 29 is slidably mounted by a spline 33 and is shifted into and 100 out of mesh with the gear 201 by shiftingl mechanism 34. The shaft 30 comprises a number of sections 35, 36, 37 and 38. The sections 35, 36 `are connected by a universal 'oint 39 and the sections 36, 37 are connected y a universal joint 40, thus enabling the section 37 to be offset from the section 35. The section 37 is slidably connected with the section 38 and, in this instance, telescopes within the section 38, as indicated at 41. The section 37 turns in a bracket bearing 42 which is secured to a draft device or tongue 43 that connects the trailer 12 to the truck 11. Sections 37, 38 extend aslant upwardly and rearwardly. This construction of the shaft 30 permits of all relative motions between the truck 11 and trailer 12 as will be occasioned in the travelingr of the train over uneven surfaces and around curves in the roadway.-

The trailer 12 comprises a chassis 44 and a body 45 tiltably mounted on said chassis. p

The fulcrum for the body 45 is indicated at 46 and the hoist mechanism whereby the body 45 is tilted is indicated, in general, by the character 47. The 'hoist mechanism 47 is of the same construction as the hoist mechanism 26 and is illustrated in detail in Fig; 5 and, accordingly, Fig. 5 amply illustrates both hoist mechanisms, and a description of the mechanism 47 will also suffice for the mechanism 26 and is as follows: A cylinder 48 is mounted on the frame of the chassis 44 and mounted to work in said cylinder is a plunger 49. The plunger 49 projects through a stuffing box 50 and the upper end of the plunger carries a pulley51. Passmg over the .pulley 51 is a cable 52 which 1s secured at one end at 53 to the frame of the chassis.. The other end of the cable 52 connectswlth an arm 54 extending downwardly from the forward endv of the trailer body 45. 'In the cylinder 48 is a port 55 communicatlng with a chamber 56. The chamber 56 1s connected by pipe 57 to a gear pump 58. The lower end `of the cylinder 48 is provided witha port 59 which is connected by a pipe 60 to the outlet 61 of the pump 58. A three-way valve 62 controlsf'the flow of liquid to and from the pump, in a manner well understood 1n 'this' art, so as to effect raising of the trailer body when the pum 58 is' operated and so as to effect holding o the trailer body in different tilted positions and lowering of,

said body. The shaft section 38. V The construction and operation of the form pump 'is driven by the of the invention illustrated in Figs. 1 to 5 inclusive will be understood from the foregoing description and, briefly stated, the 0peration is as follows:

The dumping trucktrain havingl arrived under its own power at the'plaee where the materials carried thereby are'to be deposited, the operator will throw the gear 20 into mesh to effect tilting of the truck body 14 and, at

the same time, or before or after dumping the truck body, he will throwr the gear 29 into mesh to effect dumping of the trailer body 45. When he throws the gear 29 into mesh,

the shaft 30 will vbe turned, thus operating the pump 58. 'The operator wlll then turn the The gear 29 may then be thrown out of mesh.

To lower the body 45, the three-way valye 62 will be turned into position to admit liquid from the pump to the pipe 57 and to permit liquid to discharge from the pipe 60 into the Itlis to be understood that the hoist mechanism 47, illustrated in Fig. 5, is merely typical and that any other fluid operated hoist mechanism may be employed in place of the mechanisms 26, 47.

In the modification illustrated in Fig. 6,'

the elements that function the same as those hereinbefore described are indicated b same reference characters with the ad 'tion of the letter a. In this instance the shaft 30a is a continuous flexible shaft and the same the is set into operation by a slightly different y construction than employed for operating the shaft 30. On the forward end of the shaft 30u is a sprocket wheel 29n driven by sprocket v chain 63 that, in turn, is driven by a. sprocket wheel 201a loosely mounted on the engine shaft 18". On rthe hub of the sprocket wheel 201 is a clutch member 64 adapted to be engaged by another clutch member 65. which is slidably mounted by a spline 66 on the engine shaft 18a. A shifting fork 67 is provided for scribed for the form of invention illustrated in Figs. 1 to 5 inclusive, are indicated b the same reference characters with the ad ition of the letter Fb. In this instance, the forward end of the shaft 30b connects with the shaft- 22bfof the pump 25". ThisV form of the invention requires less parts than and is easier to install than the other two described above though, to operate the pump 58", it is necessary to also operate the pump 25". Simultaneous operation of the pumps 25, 58b would not be undesirable when simultaneous dumping of the truck and trailer bodies isdeSred, but if the trailer body is to be dumped at another time than the dumping of the truck body, it would, with this arrangement, be

. necessary to operate the p'ump 25b in order to effect operation of the pump 58".

I claim: A dumping truck train comprising a motor driven truck provided with a tiltably mounted body, a trailer provided with a tiltably mounted body, a draft device connecting the truck and trailer, fluid pressure operated mechanisms on-the truck and trailer vfor tilting the respective bodies, said mechanisms including pumps, a transmission on the truck day of May 1927.

RAY H. CRISLER. 

